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THX tune-up™

By THX Ltd.

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THX tune-up (TM) allows you to properly adjust your TV, projector and speakers, helping you get the most out of your entertainment system.
NOTE: Before you download and get started, please read the "Additional Requirements" & "Connection to TV/AVR" sections below to ensure enjoyment and proper use. For a video preview of the THX tune-up app, check out the THX YouTube at
Additional Requirements
• Supported iOS devices: iPhone 4, 4S, 5; iPad, 2, 3, 4 & Mini; iPod Touch 4 & 5; iOS 7.1 or later
• If using Apple TV, must be 3rd gen version or later
• iPhone 4 & iPod Touch 4 are not supported by Apple TV; must use AV adapter & HDMI cable connection to TV or AVR for picture adjustment (720p only)
• For 5.1 audio tests, iOS device must be directly connected to AVR with adapter & HDMI cable (5.1 audio tests are not supported on Apple TV)
• App is optimized for iOS 7.1 or later for 4S & 5, iPad 2, 3, 4 & Mini, & iPod Touch 5 with an HDMI adapter & cable directly connected to TV or AVR 

Connection to TV/AVR
• HDMI cable at least 2 meters (6 ft) & Cat 2-certified
• 30-pin Apple Digital AV Adapter for iPad 2 & 3, iPhone 4 & 4S, & iPod Touch 4
• Lightning Digital AV Adapter for iPhone 5, iPad 4 & Mini, & iPod Touch 5
• Apple TV (3 gen) for picture adjustments is compatible with iPhone 4S & 5, iPad 2, 3, 4 & Mini, & iPod Touch 5
• Connect iOS device via Airplay to your Apple TV (3rd gen) & turn Mirroring ON

THX tune-up features custom video test patterns, carefully selected photos and tutorials to help adjust and confirm the best picture settings on your display based on room lighting. Using special audio tests, THX tune-up also lets you check external speakers to make sure they are working in phase and are connected properly for 2-channel stereo or 5.1 sound systems. 
THX tune-up is completely interactive — go through it at your own pace, in any order. Connect a supported iOS device to the display or sound system with an HDMI adapter & cable, or via AirPlay with Apple TV (3rd gen).
Locate the adjustment buttons on your TV and AVR remote controls and then follow the THX app tutorials which walk you through your “THX tune-up.” The app offers tips about your remote control, room lighting, viewing distance and other helpful advice. 
Video adjustments
• Aspect ratio – ensure your TV displays shapes & sizes correctly
• Brightness – make certain shadow details & night scenes are clearly visible
• Contrast – confirm white detail is distinct on your television
• Color – make sure colors are bright & vibrant but not cartoonish
• Tint – check skin tones look natural & are not too green or red
THX tune-up uses your iOS device’s camera to set color and tint with a special built in color filter. Point the device camera at the TV screen and see if the color or tint is adjusted correctly.
Audio adjustments
• Speaker assignment – ensure speakers are connected to the correct AVR output & intended sound is coming from the correct speaker
• Speaker phase – confirm that positive & negative speaker wires are connected correctly and all speakers are in phase
• Turn “moo can” on & tilt your device to hear it “moo”
• Play extraordinary THX trailers (just like in THX Certified cinemas) to show off your newly tuned TV & sound system to friends and family
• Show off your audio system by playing “THX Deep Note” in 5.1 surround sound, just like in the theater
• Have a question for THX or just want to provide feedback? Ask Tex!

This app is not a professional calibration tool and is not intended to replace an in-home professional calibration.

What's New in Version 1.2.2

Fixed iOS 9.1 issue when saving equipment connection type.


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Customer Reviews

Problem solved: fix your app, get 5 stars.

Was pretty annoyed with this product and left a fairly scathing review about a month ago having to do with the app crashing when trying to select HDMI in the equipment tab. Received an email today in response my original complaint notifying me that the very issue I had complained about was fixed. Re-Downloaded the app and viola, it works! Thank you for fixing the app! It's actually extremely useful and I have to say that my 5.1 is sounding much better than it did yesterday and some of the picture adjustments to my 73" definitely improved the picture quality. Thanks guys/gals, I do appreciate it. 🤘🏻

Great app

After picture adjustments using the app, I am getting better picture quality. Love this app. I will do my surround system adjustments when it is quiet in the house.

Better TV Picture

This app really helped improve the picture quality on my LG 55 inch Ultra HD 4K TV! Calibration process was easy with my Apple TV and mirroring the THX app from my iPad.

THX tune-up™
View In iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Utilities
  • Updated:
  • Version: 1.2.2
  • Size: 152 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 7.1 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

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